EKK8011E ELAN Microelectronics Corp, EKK8011E Datasheet - Page 5

• Manufacturer Part Number: EKK8011E
• Description: Usb And Ps/2 Keyboard Encoder
• Manufacturer: ELAN Microelectronics Corp

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Product Specification (V1.2) 07.09.2009
(This specification is subject to change without further notice)
General Description
Features
The eKK8011E is a high performance CMOS microcontroller device specially designed
for keyboard encoder applications. This device functions both in USB and PS/2
interface environment. For PS/2 interface, it supports IBM PC AT and all compatible
machines and provides a 16-character first-in-first-out buffer in which data is stored.
For USB interface, it supports the USB standard request version 1.1 as well as HID
class request version 1.1.
The eKK8011E controls all scan codes, three LED status, scan timing and
communications between the keyboard and the PC. Enhanced features combine to
ensure easy implementation of a high performance, low cost keyboard with minimal
external components.
The eKK8011E MCU is compatible with EM78611E.
The difference between eKK8011AB and eKK8011E is described in the Appendix.
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Windows is a registered trademark of Microsoft Corporation.
USB Specification Compliance
Low cost : no external components required
Operating frequency: 6 MHz
Phantom key detection
Supports Scan Code Set 1, 2 and 3 for PS/2
Supports HID Usage ID for USB
Supports PC PS/2 and USB keyboard
Supports USB Sleep Mode
Low power CMOS device technology
Internal pull-up resistor
Tri-state outputs for easy board application
Supports Windows
Supports multi-media or other special application keyboard encoder
3 LEDS (Caps/Num/Scroll) of eKK8011E change state to synchronize with PC
status when plugged into a PS2 port
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Universal Serial Bus Specification Version 1.1
USB Device Class Definition for Human Interface Device (HID), Firmware
Specification Version 1.1
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TM
95, 98, 2000, ME, XP, Vista
USB & PS/2 Keyboard Encoder
eKK8011E
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